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Newhouse, a former state legislator and agriculture director, took his home county, Yakima County, with 41 percent of the vote compared with 20 percent of the vote that went to Didier there.

In Franklin County, Didier had 44 percent of the vote and Newhouse 20 percent. In Benton County, Didier had 35 percent and Newhouse 22 percent.

As Didier and Newhouse plan to move forward, it's possible they will at least approach some of their former Republican opponents in the hopes of securing endorsements.

Primary candidate George Cicotte, a Tri-City attorney, has already said he plans to eventually make an endorsement. Holmquist will continue to fulfill what limited duties she has for the remainder of her term as a state senator, which ends ahead of next year's legislative session in January, she said.

"Politically, I will see what the future holds," Holmquist said in a news release.

The incumbent, Rep. Doc Hastings, didn't rule out making an endorsement in the race following his retirement announcement in February. Hastings' brother, Roger, had endorsed Cicotte, and Holmquist had hired a former Hastings staffer as her campaign manager.

Newhouse's campaign manager, Tim Kovis, was also a longtime aide to Hastings.

A number of Democratic votes are also up for grabs, but it's yet to be seen whether Newhouse or Didier could motivate them to vote their way in November. The two Democrats on the primary ballot, Estakio Beltran and Tony Sandoval, pulled in just more than 18 percent of the primary vote combined, and former Democrat-turned-independent Richard Wright received a little more than3 percent.